When attempting to install kivy, the message "ERROR: Could not find a satisfactory version of kivy_deps.sdl2_dev with a version number approximately equal to 0.4.5 (available versions: 0.5.1)" is displayed.

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This error message means that the version of kivydeps.sdl2dev that your system is looking for (approximately version 0.4.5) is not available, and the only available version is 0.5.1. To solve this issue, you can try updating other dependencies of Kivy by running the following command:

pip install --upgrade --user kivydeps.glew kivydeps.sdl2 kivy_deps.gstreamer

This command will update all the dependencies of Kivy to the latest versions, which should resolve the issue with kivydeps.sdl2dev. If the issue persists, you can try installing a lower version of Kivy that is compatible with the version of kivydeps.sdl2dev that you need.